diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index 70820be..70dd4be2 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -3010,6 +3010,14 @@
  */
 //#define MBEDTLS_SSL_OUT_CONTENT_LEN             16384
 
+/** \def MBEDTLS_SSL_DTLS_MAX_BUFFERING
+ *
+ * Maximum number of heap-allocated bytes for the purpose of
+ * DTLS handshake message reassembly and future message buffering.
+ *
+ */
+//#define MBEDTLS_SSL_DTLS_MAX_BUFFERING             ( 2 * 16384 )
+
 //#define MBEDTLS_SSL_DEFAULT_TICKET_LIFETIME     86400 /**< Lifetime of session tickets (if enabled) */
 //#define MBEDTLS_PSK_MAX_LEN               32 /**< Max size of TLS pre-shared keys, in bytes (default 256 bits) */
 //#define MBEDTLS_SSL_COOKIE_TIMEOUT        60 /**< Default expiration delay of DTLS cookies, in seconds if HAVE_TIME, or in number of cookies issued */